Country Detection in JavaScript and the CORS Barrier

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There are several ways to determine a user's country in a web application, but the most reliable method is using their IP address. Services like ipapi.co and ipinfo.io provide GeoIP APIs that allow developers to retrieve location data based on an IP address. However, when using these APIs from static hosting environments such as GitHub Pages, developers may encounter CORS (Cross-Origin Resource Sharing) restrictions.

https://setapolo.github.io//PaMa/UserCountryDetection.html